diff options
| -rw-r--r-- | fs/btrfs/extent-tree.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 0d73a53..b92e92c 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -2152,11 +2152,13 @@ static int noinline find_free_extent(struct btrfs_trans_handle *trans, } search_start = max(search_start, first_logical_byte(root, 0)); search_start = max(search_start, hint_byte); - total_needed += empty_size; - if (search_start != last_wanted) + if (last_wanted && search_start != last_wanted) { last_wanted = 0; + empty_size += empty_cluster; + } + total_needed += empty_size; block_group = btrfs_lookup_block_group(root->fs_info, search_start); if (!block_group) block_group = btrfs_lookup_first_block_group(root->fs_info, @@ -2171,7 +2173,9 @@ static int noinline find_free_extent(struct btrfs_trans_handle *trans, * group thats not of the proper type, while looping this * should never happen */ - WARN_ON(!block_group); + if (!block_group) + goto new_group_no_lock; + mutex_lock(&block_group->alloc_mutex); if (unlikely(!block_group_bits(block_group, data))) goto new_group; @@ -2248,12 +2252,13 @@ static int noinline find_free_extent(struct btrfs_trans_handle *trans, break; } new_group: + mutex_unlock(&block_group->alloc_mutex); +new_group_no_lock: last_wanted = 0; - if (loop > 0) { + if (!allowed_chunk_alloc && loop > 0) { total_needed -= empty_cluster; empty_cluster = 0; } - mutex_unlock(&block_group->alloc_mutex); /* * Here's how this works. * loop == 0: we were searching a block group via a hint @@ -2271,6 +2276,10 @@ new_group: cur = head->next; loop++; } else if (loop == 1 && cur == head) { + + total_needed -= empty_cluster; + empty_cluster = 0; + if (allowed_chunk_alloc && !chunk_alloc_done) { up_read(&space_info->groups_sem); ret = do_chunk_alloc(trans, root, num_bytes + |